I haven't played a lot of Sam and Max, I didn't grow up with a lot of point-and-click adventures. I think that's a good lead for inspiration though, I may check some of those games out to see. I definitely want to explore more crime-related events, across different swaths of the population (i.e. from common thieves to Family-sanctioned fencing).
I am happy with how the mood system turned out, I'm glad you enjoy it! My initial worry with adding moods and intuition was that it would funnel the player too much into a simple strategy, and I'm still looking to add more counters to "jam" that system.